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Internal Combustion MCQ - Multiple Choice Question and Answer

Internal Combustion MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 1
Which one of the following engines will have heavier flywheel than the remaining ones?

30 kW four-stroke petrol engine running at 1500 r.p.m.
30 kW two-stroke petrol engine running at 1500 r.p.m.
30 kW two-stroke diesel engine running at 750 r.p.m.
30 kW four-stroke diesel engine running at 750 r.p.m.

Question No : 2
The normal heptane (C7H16) is given a rating of ________ octane number.

0
50
100
120

Question No : 3
In compression ignition engines, swirl denotes a

Haphazard motion of the gases in the chamber
Rotary motion of the gases in the chamber
Radial motion of the gases in the chamber
None of the above

Question No : 4
The process of breaking up or a liquid into fine droplets by spraying is called

Vaporisation
Carburetion
Ionisation
Atomisation

Question No : 5
A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.

Half
Same
Double
Four times

Question No : 6
Which of the following does not relate to a spark ignition engine?

Ignition coil
Spark plug
Carburettor
Fuel injector

Question No : 7
The combustion in compression ignition engines is

Homogeneous
Heterogeneous
Both (A) and (B)
None of these